Strange Followers

I was reviewing the list of people following me to see if I missed adding anybody back, and I discovered something. There are about 10 "people" following me with very suspicious looking accounts. All of them are following 26 people - exactly 26.  I'm guessing they are just sockpuppet accounts,  but I don't see the point. It reminds me of the people who create computer viruses.  They just don't have enough to do with their time.  Such a shame because they could have been reading!